Revert 148046 - Revert 147650 - Implement installation of the Chrome App Host.

chrome/installer/util/installation_state.h

Index: chrome/installer/util/installation_state.h
===================================================================
--- chrome/installer/util/installation_state.h	(revision 148103)
+++ chrome/installer/util/installation_state.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -153,6 +153,7 @@
     CHROME_BROWSER_INDEX,
     CHROME_FRAME_INDEX,
     CHROME_BINARIES_INDEX,
+    CHROME_APP_HOST_INDEX,
     NUM_PRODUCTS
   };